#include <stdio.h>


int main()

{

int line = 5; // 피라미드 몇줄 쌓을건지

int i;

int lineCount = 1;

int left, right;


left = right = line;


for ( i = 1; i <= line*(line*2 - 1); i++) {

if (i >= left && i <= right)

printf("*");

else

printf(" ");

if (lineCount == i/(line*2 - 1)) {

lineCount++;

left--;

left += line*2 -1;

right++;

right += line*2 -1;

printf(" "); // 줄바꿈

}

}

return 0;

}